Backdoor.Win32.Onalf Missing Authentication

2021-01-20T00:00:00
ID PACKETSTORM:161045
Type packetstorm
Reporter malvuln
Modified 2021-01-20T00:00:00

Description

                                        
                                            `Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/ba815d409cd714c0eac010b5970f6408.txt  
Contact: malvuln13@gmail.com  
Media: twitter.com/malvuln  
  
Threat: Backdoor.Win32.Onalf  
Vulnerability: Missing Authentication  
Description: WinRemoteShell (Onalf) listens for commands on TCP port 2020. Interestingly, it will only start listening once it can connect outbound to SMTP port 25. Not much of a self respecting backdoor, as it allows anyone to logon without requiring a password. After logon you are greeted with Welcome to WinRemoteShell(c)Chernickevich http://onehalf.hotmail.ru.  
Type: PE32  
MD5: ba815d409cd714c0eac010b5970f6408  
Vuln ID: MVID-2021-0042  
Disclosure: 01/20/2021  
  
  
Exploit/PoC:  
TELNET x.x.x.x 2020  
  
  
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